Process for removing ink or coloring-matter from paper.



WILLIAM B. MEIXELL, or SAYRE, rrnnsrrvanm,

- JA ES B.'STALNAKER AND onn-rnmn T THOMAS WILLIAMSPQRT; PENNSYLVANIA.

rnoon'ss Foes-movin INK;

Eli o Drawing.

' -To 'all'wh'om it may concern:

, old newspapers,

ste 's of thefprocess will be particularly" nients froin' paper,

-1ng'ma tter,-which is-not only simple, yery cheap,

Be it known that I, "WILLIAM B. NiEIXELL', a citizen of the U nited States, and a resident of Sayre, State of Pennsylvania, have made certain new and usefullmprovements in Processes for Removin Ink or Goloring-Matter from Paper, of-which the following is a specificauon'.

My inventionrelates to an improved process for removing ink, coloring matter or pig'- and it consists .in the steps'hereinafter enumerated.

The main object of-my inventionis to provide an exceedinglysimple process for taking out the ink from printed papers,

book paper, etc., without harming the fiber, so that the'latte'r can be repulpd and made again into white paper. ;A further object of my invention is to provide, a process for removing ink or color:

but is the ingredients used in the proo ess' beingobtainable everywhere and costing omparat ively" little.

Other objects and advantages will appear in the following specification and the novel pointed out in the appendedclaims.

disadvantages and original,

stages through which the is injured so difficulty which has been heretofore en- 'coi ntgred by. th0sej who have endeavored to rid printed paperfrom the-ink or coloring matter thereon has been that the many in the renovating process, together with the cost of thech'einieals which are necessary,

has inade these processes so expensive that some of them have been abandoned on ac- Fu rther-more, 1n many of pulped, it is not fit forthe manufacture of "paper as good as the original. Again, it has been found that it"is an exceedingly diflicult 'inattet' to" treatpaper which has been printed upon. so as't'orestore it to its pristine whiteness. v I My improved processdobviates all these produces a pulp which is approximately, if not quite, as white as the and which retains all of its adhesive qualities, so'that a. paper prepared fromit .is as ;.strong and durable. as pared with freshly made pulp. 1

v Specification of Letters Patent.

Application'filed August 10; 1910. Serial No. 576,491.

in the county of Bradford and such as paper .must pass that pre- WHEELER JENKINS, BOTH.QF

onconoitme-avriirrrnn raoivr rerun. I

Patented Apr. 11, 1911.

i In carrying out my process, I take the-paper with the printed or coloring matter thereon, and-,preferably, treat it in a rotary T he paper is then put in the heaters and is beaten up into pulp with either hot or cold vided', I pass into the beater a mixture of water and common whiting, 2'. 6., 'levigated or unlevlgated chalk.

chalk may be used for the, lsamepurpose. The precise action of the whiting on the ink or coloring matter is not known. It. is presumed that there is both a chemical and a mechanical action. As soon as the mixture of the whiting, water and paper pulp has been thoroughly beaten in the heaters, the pulp is passed. on then to other heaters where it thoroughly washed. The washing tends to drain out the ink, coloring mattor and the whiting, and each subsequent washing leayes the pulp whiter than before, until finally the pulp is restored to its original whiteness. it can now be passed on to the'paper machinesand the paper prepared from it willzbe, as stated before, in all .re spects,'equal to that prepared from freshly ma e pulp.

paper, it will be understood that this process is equally applicable, to variousv kinds of paper, such as wall paper, coatedand sized The value'o'f the process simplicity and 'cheapness.

I am aware that various earths have been used as fillers for paper. 'My process involves nothing of the kind.

lies largely in its although it would not injure (lid. but it is preferably washed from the pulp prior to its manufacture into paper and in being so washedcarrie's with it the ink or other coloring matter. do not claim the process of manufacturing paper by the use of chalk as a filler.

.What. lclaim is: I

" ,1. The herein described process I of extreating paper into apulp, then treating it with'a finally washing the pulp.

ASSIGNOR Q1? ONE-THIRD TO water. When the paper has been finely di- While I have'spoken primarily of printed papers. book paper, as .well as newspaper.

I, therefore,

ink or other coloring matter frompaper which consists in first beating up the T.

steam cooker so as to soften up the inln I If the former is used the actlon is quicker, although the ground" v The earth does not necessarily enter into the final product,

the paper if it' mixture of earthy matter and water; and

The herein described process of 'exture of water and Whiting, beating up the hunting ink or other coloring matter from mixture of pulp, water, and whitmg, and pzqmwhich consists in beating up the pufinally washing the paper by beating up the 0 1m into puip with water, adding ermixture pulp with an excess of fresh water and 1.5

5 of willornnd whiting, beating up said paper draining ofl the whiting and coloring with said mixture, and finally washing the matter,

pulp. p p I 3. The herein described process of ex- WILLIAM MEIXELL. tl'ucting ink or other coloring matter from Witnesses: 10 pupe r which consists in beating up the pa- 'L. A. STANLEY,

per ntoa pulp with water, adding wmix- SOLON C. :KEMON. 

